A. Acids and bases don't react with each other. --> False. Acids and bases react in reactions called neutralization reactions, whose products are salt and water.
B. Acids mixed with bases neutralize each other. --> True. See above.
C. Acids mixed with bases make stronger bases. --> False. Acids and bases react to neutralize each other, so they would weaken each other, not result in a stronger base or a stronger acid.
D. Acids mixed with bases make stronger acids. --> False. See above.
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Answer:</h3>
B. Acids mixed with bases neutralize each other
The answer could be A) or D) because the zero acts as a place holder. Its a little easier to derive it if you have a bigger decimal
CH4 + 2O2 → CO2 + 2H2O + 890 kJ
MM of CH4 = (12.01 + 4x1.008) g/mol = 16.04 g/mol
Moles of CH4 = 45.5 g CH4 x (1 mol CH4/16.04 g CH4) = 2.837 mol CH4
q = 2.837 mol CH4 x (890 kJ/1 mol CH4) = 2520 kJ
Answer:
Air Current
Explanation:
Say I am in California and there is a massive fire next to me but not close enough to me to really see the fire and the next day I see no fire but theres a ton of ash in the sky, this can be due to the wind current taking the smoke from the fire into my direction and that smoke falling in my area. So basically a wind current can take the smoke from a fire into another destination and cause a rapid change in air quality in a day.
Because the half-life is 11, 400 years there would be 1/3 of 5 grams left in it which 1.75 grams
Your answer would be:
there is 1.75 grams of carbon-14 left in the fossil sample
